Improvement in packing-rings for car-axle boxes



T. C. HARGRAVE.

PACKING mms FOR CAR AXLE-BOXES. No. 170,084. Patented Nov.16,1875

xfi m N. PETERS, FHOTO-UTHOGRAPNER, WASHINGTONv D C UNITED STATES PA ENT OFFICE.

v THOMAS C. HARGRAVE, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN PACKING-RINGS FOR CAR-AXLE BOXES.

Specification forming part of Letters Patent No. 170,084, dated November 16, 1875; application filed I October 26, 1875.

To all whom it may concern Be it known that I, THOMAS C. HARGRAVE, of Boston, Massachusetts, have invented a new and useful Improvement in Packing-- Rings, of which the following is a clear, full,

and exact description, reference being had to the accompanying drawings, making a part of this specification, in which- Figure l is a side elevation. Fig. 2is a vertical section of my improved ring, and Fig. 3

tween these thicknesses of leather I secure the spring b, provided with the arms 0 c, the thick nesses being secured together by the bolts or rivets d 61. By this means I protect the spring against the possibility of loss or damage, while the lapping ends a (it allow the ring an automatic adjustment to the size of the spindle.

I am aware that rings have been made in sections with lapping ends; but when these that the tendency of a ring of my construction is to preserve its circular form, and change only its diameter to suit the spindle and accommodate itself to the wear.

I am also aware that springs have been used to compress the ring to its work, and therefore Ido not claim the use of a spring, broadly, but only when concealed and protected against loss or damage.

The arms 0 c prevent the ring from revolving with the axle.

Having thus explained my invention, what I claim as new, and desire to secure by Letters Patent, is-

The elastic open packin g-rin g A, constructed, as described, of two or more pieces of leather, and provided with the metal spring Insecured between the thicknesses,substantially as and for the purpose set forth.

THOMAS C. HARGRAVE.

Witnesses:

JAs. P. SULLIVAN, W. B. S. GAY. 

